Please research before you post facts. Opinion is okay but everything you hear are read is not always Truth. I don't post what I do not know are understand without knowledge of it. I retired in the medical field after almost 50 years. I have also PhD's and no that doesn't make me more intelligent than you. I'm older than many of you but that doesn't make me wiser. However, never do I belittle anyone. I have no ego to bruise. There is no arrogance in me!